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Multiple Lan interfaces?

sourcenaut
I have a computer with 4 NICs.  I want to use 3 of them to provide different subnets to separate certain computers on Lan.  Is this possible?


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  • 0
    You shouldn't connect multiple interfaces to the same physical LAN.  Providing different subnets is a solution to a problem - what is the problem you want to solve?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    You shouldn't connect multiple interfaces to the same physical LAN.  Providing different subnets is a solution to a problem - what is the problem you want to solve?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0 in reply to BAlfson
    I just want to create 3 gateways each with its own dhcp server.  Is that possible?
  • 0 in reply to sourcenaut
    I just want to create 3 gateways each with its own dhcp server.  Is that possible?


    Yes, it is possible. I have a quad netcard installed in my system and use the following setup:

    Interface1 = WAN
    Interface2 = 172.16.1.* 
    Interface3 = 192.168.1.* 
    Interface4 = 10.1.0.* 

    The DHCP server provides IP addresses on all 3 private LANs. 

    Is this what you are looking for??
  • 0 in reply to ctrlaltdel
    YOu should segregate the traffic for the separate lans either by using separate switches, or using a switch properly configured with VLANs to segregate the traffic; of course, if you have a switch that support VLANs, you can use just one network interface for the multiple internal subnets via tagging.

    CTO, Convergent Information Security Solutions, LLC

    https://www.convergesecurity.com

    Advice given as posted on this forum does not construe a support relationship or other relationship with Convergent Information Security Solutions, LLC or its subsidiaries.  Use the advice given at your own risk.

  • 0 in reply to BrucekConvergent
    Yes ctrlaltdel, thats what I wanted to know, thanks.

    YOu should segregate the traffic for the separate lans either by using separate switches, or using a switch properly configured with VLANs to segregate the traffic; of course, if you have a switch that support VLANs, you can use just one network interface for the multiple internal subnets via tagging.


    I would rather use vlans but unfortunately my switches don't support it.

    I tried to use multiple switches before but unfortunately i'm using linksys routers configured to act as a switch.  I don't think the routers can understand which is the master switch so it doesn't work properly.
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